HESI A2 Reading Comprehension V1 2024

Correct Answer: A

Rationale: The correct answer is A: To consist of. In the context of the first paragraph, 'composed' refers to the elements or parts making up something. The word implies that something is made up of different components. This is evident as the paragraph discusses how the team is composed of individuals with diverse skills and backgrounds. Explanation of why other choices are incorrect: B: To be uniquely discovered - This does not fit the context of the paragraph which is describing the makeup of a team. C: To be set apart - This does not align with the meaning of 'composed' in the context of being made up of different parts. D: To be surprised - This has no relevance to the meaning of 'composed' in the paragraph.

Correct Answer: C

Rationale: The correct answer is C because the author's primary purpose is to inform the reader about how an electrocardiograph reads the electric currents emitted by the heart. This is evident as the essay likely discusses the technical aspects of electrocardiography. Choice A is incorrect because there is no indication of persuasion in the essay. Choice B is incorrect as the focus is not on entertaining but on providing information. Choice D is incorrect as the essay is not about analyzing the differences between specific nodes in the heart.

Correct Answer: D

Rationale: The correct answer is D because it accurately describes the three steps of the 'wave of excitation' in the heart. 1. The excitation of the atrium: This step involves the initiation of the electrical signal in the atria, leading to their contraction. 2. The excitement of the ventricle: Following the excitation of the atrium, the electrical signal spreads to the ventricles, causing them to contract. 3. The relaxing of the ventricle: Once the ventricles have contracted and ejected blood, they then relax in preparation for the next cardiac cycle. Choice A is incorrect because it mentions the peak ECG, which is not a step in the 'wave of excitation.' Choice B is incorrect as it includes systemic neural response, which is not part of the electrical conduction pathway. Choice C is incorrect as it describes the contraction and relaxation of the atrium only, missing the crucial step of ventricular excitation.

Correct Answer: A

Rationale: The correct answer is A: foodborne illnesses. The subject of the passage is foodborne illnesses, as it is the main focus and discussed in detail. The passage may mention other aspects like dangers of uncooked food, bacteria, and proper food preparation, but these are supporting details rather than the main subject. Foodborne illnesses encompass these topics but go beyond them to cover the broader issue of illnesses caused by contaminated food.

Correct Answer: C

Rationale: The correct answer is C because it accurately summarizes the key points of the passage about the ECG. It mentions that the ECG measures the stages of the 'wave of excitation' within the heart and its three distinct steps. It also describes how this wave spreads from the SA node to the AV node. Choice A is incorrect because it focuses on electrostatic charges set off by the heart, which is not the main focus of the passage. Choice B is incorrect because it talks about unique electric currents on the surface of the body, which is not the main purpose of the ECG as mentioned in the passage. Choice D is incorrect because it only mentions that the ECG measures electric currents within the body without providing the specifics of the wave of excitation and its stages as described in the passage.